Why not shut off your phone if you don't want to be disturbed? I have mine on as anyone who would call me at 3 AM I want to disturb me.
If you need to use a smartphone, at least keep it in airplane mode, even if only to avoid eating radiations 8hr every night.
It has been so bad that I was afraid to live alone because I thought I would get fired for being late.
Solved with a phone.
However my concern has more to do with the current state of things rather than the solution for this particular problem. I mean, how is it that I have to go and turn off the phone? shouldn't the phone –apps/devices/etc– try to be less disturbing?